| Sold | Grade | Monthly Average |
| Jul 2026 | 4.0 | $2.65 |
| Dec 2023 | 8.0 | $6.60 |
| Jun 2025 | 6.0 | $3.00 |
| Oct 2023 | 6.0 | $3.60 |
| Oct 2016 | 6.0 | $2.40 |
| Jul 2011 | 6.0 | $2.40 |
| May 2011 | 5.0 | $1.40 |
| Nov 2020 | 4.5 | $1.80 |
| Dec 2020 | 4.0 | $2.00 |
| Aug 2018 | 4.0 | $1.70 |
| Dec 2010 | 4.0 | $2.40 |
| Sep 2024 | 3.0 | $2.70 |
| Oct 2018 | 2.0 | $1.70 |
| Feb 2014 | 1.0 | $1.10 |